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Steve Lund (webhead)
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User Since
Oct 22 2013, 9:05 PM (311 w, 5 d)

Recent Activity

Jan 16 2019

Steve Lund (webhead) added a comment to T60538: Grease Pencil looks different rendered then in viewport with opaque materials .

Hey Antonio!

Jan 16 2019, 5:37 PM · Grease Pencil, BF Blender

Jan 15 2019

Steve Lund (webhead) added a comment to T60538: Grease Pencil looks different rendered then in viewport with opaque materials .

Just simply render and compare to the rendered viewport.

Jan 15 2019, 4:54 PM · Grease Pencil, BF Blender
Steve Lund (webhead) created T60538: Grease Pencil looks different rendered then in viewport with opaque materials .
Jan 15 2019, 4:48 PM · Grease Pencil, BF Blender

May 16 2016

Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

I'd like to also add that Windows 8.1 works too, Just as good as Windows 7.

May 16 2016, 7:01 PM · BF Blender

Apr 1 2016

Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

Just a quick update.
We've run some tests on the card yesterday. On Linux 980Ti is roughly 15-20% faster than 980 (which is kinda expected, because top-range is not linear scale in terms of buck-per-performance, it has much more ram tho :) Linux results i've put to the spreadsheet.
We also tested the card on Windows 10 machine. Once all the Windows glitches were solved by wipe-installing it from scratch, we set all power policies to Maximum Performance, but even then BMW27 scene was 3 times slower.
In both cases we used 2.77 release. From our code perspective it means that while parameters might be not optimal, they do work quite well on Linux.
Next step we'll try to test the card on Windows 7 machine here. Then it'll be more clear if it's Linux vs. Windows or Win7 vs. Win10 and so.
P.S. While googling around for tunable performance parameters got quite reasonable amount of forums where people were complaining about dropped FPS in games after updating to Win10.

Apr 1 2016, 9:25 PM · BF Blender

Mar 16 2016

Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

Okay I may have come to some conclusions for myself, I installed Windows 8.1 and my render speeds with the Evga 980ti where fast (even a tad faster than Windows 7.) And looking into my motherboard (its the ASUS Z9PE-D8 WS.) I've found that the latest officially supported OS was Windows 8.1. Even though everything else seemed to run fine on Windows 10 I'm wondering if maybe my issue is the Motherboard drivers not officially supporting it? Maybe others with slow render speeds should check there MB's drivers and make sure there officially supported.

Mar 16 2016, 6:45 PM · BF Blender

Mar 14 2016

Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

@Steve Lund (webhead), who is the vendor of the card?
@Steve Lund (webhead), @maris (maris), why don't you put results to a spreadsheet linked above? That would help a lot gathering bigger picture.
As for performance level -- it's not in an application control, so it's something specific to a driver or driver settings.

Mar 14 2016, 5:33 PM · BF Blender

Mar 8 2016

Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

Ok Interesting.... Just to add to the confusion, running Windows 7 Pro on my desktop I get over twice the speed with my EVGA 980ti. Also on complex scenes my Nvidia driver would crash on Windows 10 and not render at all, but seems to work fine on Windows 7.

Mar 8 2016, 10:45 PM · BF Blender

Feb 28 2016

Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

@Brecht Van Lommel (brecht) Mike's and Rian's results in the spreadsheet should confirm that the display performance isn't the issue effecting the GPU speed.

Feb 28 2016, 5:26 AM · BF Blender

Feb 26 2016

Steve Lund (webhead) updated subscribers of T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

@Tobias Kindel (tobi) Just go here and download the latest build: https://builder.blender.org/download/

Feb 26 2016, 5:05 PM · BF Blender

Feb 25 2016

Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

@Sergey Sharybin (sergey) Yes, the core and memory speeds are low (around 200mhz) before and after rendering. Also I'm using the standard EVGA 980Ti 6gb.

Feb 25 2016, 4:01 PM · BF Blender

Feb 24 2016

Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

Here's my GTX 980Ti under rendering workload.

Feb 24 2016, 8:32 PM · BF Blender
Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

Okay I can confirm that the driver version makes no difference between 358.91 and 361.91.

Feb 24 2016, 7:05 PM · BF Blender
Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

That's interesting Mike, the only difference I see is your using a slightly older driver and Windows 7. Here is all my information:

Feb 24 2016, 6:09 PM · BF Blender

Feb 23 2016

Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

I'd also like to help in any way possible, although I don't have much experience building Blender. I apologize if I went off topic comparing the new GTX 980ti to the older 970 on this task, I don't have a stranded 980 to compare with.

Feb 23 2016, 3:58 PM · BF Blender

Feb 22 2016

Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

Running some more tests, there is a nice speed increase on both the GTX 980ti and 970 with the latest Blender 2.77 test 2 build. But the older 970 still renders about 25% faster than the new GTX 980ti on a scene with SSS, and rendering Mike Pan's Benchmark the 970 was still 40 sec faster. Also when rendering with the GTX 980ti I got this error twice: CUDA Error at cuctxcreate: launch exceeded timeout. Does this info help at all?

Feb 22 2016, 11:41 PM · BF Blender
Steve Lund (webhead) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

I can also confirm that after installing a new GTX 980TI 6gb, Blender Cycles actually renders slower than it was with my GTX 970. Has there been any update on this? Is this still a known issue?

Feb 22 2016, 4:08 PM · BF Blender